Rockwell Automation 873M Ultrasonic Discrete Sensors Installation Instructions User Manual
Discrete output mode
Installation Instructions
Ultrasonic Discrete Sensors
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
General
300 mm Models
800 mm Models
Sensing range [mm (in.)]
30…300
(1.18…11.81)
50…800
(1.96…31.49)
Adjustment range [mm (in.)]
50…300
(1.96…11.81)
70…800
(2.75…31.49)
Blind Zone [mm (in.)]
0…30 (0…1.18)
0…50 (0…0.96 )
Standard target [mm (in.)]
100 x 100 (3.93 x 3.93)
Frequency
Approx. 390 kHz
Approx. 255 kHz
Response delay
Approx. 30 ms
Approx. 100 ms
Operating temperature [C (F)] -25…70° (-13…158°)
Storage temperature [C (F)]
-40…85° (-40…185°)
Electrical
Operating voltage
10…30V DC
Output current
200 mA
Current consumption
≤20 mA
Protection type
Short-circuit, reverse polarity, overload
Voltage drop
<3V
Output
Output type
Discrete-PNP with N.O./N.C.
Output Rating
200 mA max.
Repeatability
<1%
Switching frequency
<13 Hz
<4 Hz
Hysteresis
1% of the set operating distance
Sensitivity adjustment
Remote teach/optional programming
cable
Environmental
Enclosure type rating
IP67
Shock
30 g, 11 ms
Housing material
Brass, nickel-plated
Connection
Micro-quick disconnect
Certifications
cULus Listed and CE Marked for all
applicable directives
Models to be covered:
873M-D18PO300-D4
873M-D18RPO300-D4
873M-D18PO800-D4
873M-D18RPO800-D4
Discrete Output Mode
• Discrete sensors feature normally-open/normally-closed
PNP outputs.
• Includes two teachable set points and multiple output
functions.
• The upper and lower sensing range can be scaled to a
distance-fixed window.
• The sensor is taught using an easy four-step remote teach
process or an optional programming cord.
LED Displays
Operating Mode
Red LED
Yellow LED
Green LED
Teach Mode
Target detected
One flash
Continuous
flash
Off
No target detected
Flashes
Off
Target marginal (invalid
teach)
Standard Mode
Target present
Off
On
On
Target not present
Off
Solid-state devices can be susceptible to
radio frequency (RF) interference
depending on the power and the frequency
of the transmitting source. If RF
transmitting equipment is to be used in the
vicinity of the solid-state devices, thorough
testing should be performed to assure that
transmitter operation is restricted to a safe
operating distance from the sensor
equipment and its wiring.
IMPORTANT
ATTENTION
If a hazardous condition can result from
unintended operation of this device, access
to the sensing area should be guarded.